Wrapping machine



Patented Apr. 153, 1924.

leidde-d1 GEORGE W. PROUTY, F BOSTON7-AND JASPER BERRY, GF EIEDFORD, MASSACHUSETTS; SAID DERBY ASSXGNOR 'lO ANDREW TER-KELSEN, GF BQSTGN, MASSACHUSETTS.

WRAPPNG MACHINE.

Application filed May 9, 192B. Serial No. 637,657.

To all whom t may concern.' Y Be it known that we. GEORGE W. PnoUTr and Jasmin Dnanr, citizens of the United States, residing at Boston, county of Sudolk, State of Massachusetts, and at Medford, county of Middlesex. Sta-te of lassachusetts, respectively, have invented a certain new and useful Improvement in 1Wrapping Machines, of which the following is a specifica-tion, reference being had therein to the accompanying drawings.

This invention relates to wrapping machines of the general type shown and described in van application forv Letters Patent filed June 21, 1921, by George `W. Prouty, Serial No. 479,410, and adapted primarily for wrapping annular objects, suchv as automobile tires, coils of wire, etc.

The present invention has for its object to provide improved means whereby a machine of this type may be readilyadjusted 4with minimum effort so as to adapt the same to the wrapping of articlesof different sizes and for securely locking the parts in ad- `iusted position against possibility of accidental displacement.

The foregoing and other objects of the invention, together with means whereby the vsame may be carried into effect, will best be understood from the following description of one form or embodiment thereof illust-rated in the accompanying drawings.

It will be understood, however, that the particular construction described and shown has been chosen for illustrative purposes merely, and that the invention, as defined by the claims hereunto appended, may be otherwise practised without'departure from the spirit and scope thereof.

In said drawings--v Fig. 1 is a front elevation of the complete machine.

Fig.v 2 is an enlarged section, taken substantially on the line 2, 2 of Figure 1, of

the shuttle yoke lock.

,Fig 3 is a still furtherenlarged detail section taken substantiallyon the line 3, 3 of Figure 2.

*The frame of the machine comprises a base 15 and acurved yoke 16 lwhich is pivotally mounted ony a .shaftv 17 journalled in an upright 18 risingfrom said base. The yoke 16 is provided with-guide rollers 19 for an annular shuttle 20 which is rotated by afdriving-member in the form of africslowly with respect to the speed of rotation of the shuttle 20. Said shuttle is formed with a hinged'segment 26 normally closing a gap through which the work W may rbe inserted. The wrapping material, preferably in the form of a continuous strip 'S of paper, is supplied from a roll 30 supported by a reel or spindle 31 carried by the yoke 16. Said paper passes from the roll 30 over a tension device 32, thence through av folding device 33', and thence over a guide plate 34. to the shuttle 20. Said shuttle 2O comprises an annulushaving on Vone face a circular series ofl rollers 35 about which the strip S is wrapped when the shuttle is rotated, said strip'being fed from the shuttle about guide roller k36 to the work W. Between the shuttle 2O and the source of supply 30 there is provided a cutting mechanism comprising a knife 37 cooperating with a portion of the guide plate 34 to sever the strip S when a sufficient lengt-h thereof has been wound around the shuttle rollers 35 to complete thefwrapping of the work W. rllhe knife 37 is automatieally actuated, after a predetermined number of lrotations of the driving disk 21, by a counting mechanism 38 actuated at each rotation of said drivingdisk by a cam projection. 39 thereon, said counting mechanism. being manually adjustable in accordance with the size of the articles wrapped.

Fromvthe foregoing, the nature, location, and. function of the parts referred to will be sufficiently .understood for the purpose ofthe present case. With the exception of ithose Vhereinafter described, and in so far as; the others YenterV into combination thereyw-ithyas f pointed out-fin the claims, these parts are not involved in the presentinven- "tion and may be Ofany suitable'construcf tion and arrangement.

`11i-order lto :ensurer the y'proper operationof the machine, it is necessary that the shuttle be centered with respect to the portion W of the work W which passes therethrough. To this end a relative adjustment of the shuttle and work is afforded by the pivotal mount-ing of the yoke 16 by which the shuttle is carried. Since said yoke is pivoted upon the shaft 17 which carries the driving disk 21, so that the axis of rotation of said disk is the same as the pivotal axis oit the yoke, this adjustment does not disturb t-he driving engagement of saiddisk with the shuttle.

The Weight of the shuttle 2O and that portion'of the yoke 16 which supports the same is considerable, and, in order to facilitate the adjustment ct the yoke, said weight is, in accordance with the present invention, partly counterbalanced by the paper roll and adjacent parts, which are carried by the rear end of the yoke, or that portion thereoiE at the opposite side of the pivot 17 trom that supporting the shuttle. ln order further to support the weight of the shuttle and the adjacent portion of the yoke, and torce thelatter upwardly, there is provided ra spring; 40 connected at its upper end to an ear 41 on the rear end ot the yoke beyond the roll supporting spindle 31 and at its lower end to a bracket 42 secured to the base 15. The yoke 16 is provided with a laterally or forwardly projecting' handle 43 by means oit which it may be raised and lowered about its pivot 17 this operation being assisted by the spring` 40 whose strength, in addition to the "force exerted by the weight of the roll 30, is suliicient substantially to counterbalance the weight 0f the shuttle.

The yoke 16 is securely held in adjusted position by means of a combined clamp and .lock carried by an upright 44 rising troni the base 15. The upright has at its upper end an extension 45 (see particularly 2) bearing` against one side 'face of the Vtree forward end ol? the yoke. and at the opposite side tace ot the yoke is: a plate 46 slidably connected with the upright 44 by dowel pins 47. The plate 46 is drawn toward the eX- tension 45 or separated therefrom to clamp and release the yoke by means of a screw 60 in threaded engagement with the plate 46 and having` an unthreaded stem 48 passing through a slot 49 in the yoke 16 and a suitably disposed opening in the extension 45, said stem being` provided with a handle 50 by means of which it may be turned. In addition to the clamp above described, means are providedfor positively locking the yoke in its 'adjusted position, said locking means comprising a latch 51 having an end adapted to engage any one ot a series of recesses 52 in the yoke 16. Said latch 51 is withdrawn to disengage the yoke when the clamp is opened by means 'of a cam 53 secured as by a set screw 54, to the stem 48 between a head 6l on the latter and the extension 45, said cani having a surface which engages a shoulder en said latch. Said latch is projected inwardly to engage the appropriate recess 52, when released by the cam 53 upon turning of the stein 46 to tighten the clamp. by means oia a spring1 pressed plunger 56 housed in said latch and engagino the inner 'tace ot the cam 53.

in order to adjust the yoke, the handle 50 is operated to turn the stem 48 and release the clamp, the cam 35 simultaneously withdrawing the latch daid yoke is then raised or depressed by means 1.53, iis operation being` facili ted by the spring 40, and the handle 59 then turned in the opposite direction to tighten ine clamp, l

"ter to engage a new recess 52 in the yoke. "lertain features shown and referred to herein are covered by claims ot other applications tor Letters l atent as 'follows ls t0 the machine as a whole. application Serial No. 479,410, above referred to;

to the driving` mechanism, application .qerial No. 637,655. tiled lllay 9, 1928. by Georg-e TW. Prouty, Jasper Derry and lhilip (l. Tengberg;

fis to the paper folder.

5 tiled May 9, 1923. by George Y. Prouly and Jasper Derry;

s to the shuttle, per se. and in combination with certain (5o-operating; parts, Serial No. 637.618, tiled May 9, 1923, by Jasper Derry; and

fis to the work supporting rollers and associated parts. Serial No. 637,658 tiled May 9, 1923 by George VJ. Prouty.

Having` thus described our invention, we claim 1. ln a machine ot the class described, a. work support. an annular shuttle through which the work is adapted to be moved, a curved yoke mounted to swing; about a .fixed pivot. rotatable members thereon to support said shuttle, a shuttle driving member rotatable about the axis ot said pivot. a spring tor forcing; said y ke upwardly about its pivot, and means for lockingsaid yoke in adjusted position.

2. In a machine ot the class described, a work support, an annular shuttle through which the work is adapted to be moved, a curved yoke mounted to swing about a lixed pivot, rotatable members thereon to support said shuttle. a shuttle driving member r0- tatable about the axis et said pivot, a spring tor forcing,- said yoke upwardly about its pivot, and clamping members on opposite sides or' said yoke for retaining it in adjusted position.

3. In a machine of the class described, a work support, an annular shuttle through which the Work is adapted to be moved, a curved yoke mounted to swing about a lined lease the latch, and permit the end ot' the pivot, rotatable members thereon to support said shuttle, a shuttle driving member rotatable about the axis of said pivot, a spring for forcing said yoke upwardly about its pivot, a bracket having an extension bearing against a side tace oi" said yoke. a plate on the opposite side face or said yoke, and a. rotatable member extending through said bracket and haixf'ing an end threaded to said plate whereby the iattcr may be moved toward said extension and clamp the yoke in its adjusted position.

Y' In a machine ot the class described, a support, an annular shuttle through the v-,f'ork is adapted to be moved, a i "ed y mounted Vto swing about a fixed pivot, r-r table members thereon to support said shuttle, a shuttle driving member rotat-able about the axis of said pivot, a spring for forcing said yoke upwardly about its pivot, means :for clamping said yoke in adjusted position, and a laterally projecting handle at the tree end of said yoke whereby said yoke when unclamped maybe forced downwardly against the tension oi said spring.

5. In a machine or the class described, a work support, an annular shuttle through which the work is adapted to be moved, a curved yoke mounted to swing about a tlXed pivot, rotatable members thereon to support said shuttle, means for driving said shut-tlc about its center, a resilient member for 'forcing said yoke upwardly about its pivot, and means for locking said yoke in usted position.

6. In a machine of the class described, a base, a work support thereon, a rotatable annular shuttle through which the work is adapted to be moved, a yoke pivotally mounted above said base and supporting said shuttle at one side oit its pivot, and a spring connecting said yoke at the other side ott its pivot with said base.

7. In a machine of the class described, a work support, an annular shuttle movable about its center and through which the work is adapted to be moved, a pivoted support for said shuttle, and means mounted upon the shuttle support for supporting a supply oit wrapping material in a continuous strip adapted to be fed to said shuttle.

8. In a machine of the character described, a work support, a rotatable annular shuttle through which the work is adapted to be moved, a pivoted yoke supporting said shuttle at one side of its pivot, and a support Jfor a supply of wrapping material mounted ITU. i(

wh ich upon said yoke at the opposite side of its pivot.

9. In a machine of the character described, a work support, a rotatable annular shuttle through which the Work is adapted to be moved, a pivoted yoke supporting said shuttle at one side of its pivot, a support for a supply of wrapping material mounted upon said yoke at the opposite side of its pivot, and additional means for counterbalancing said yoke and shuttle.

l0. In a machine of the character described, a work support, a rotatable annular shuttle through which the work is adapted to be moved, a pivoted shuttle supporting yoke, and a latch for positively locking said yoke in adjusted position about its pivot.

11. In a machine of the character described, a work support, a rotatable annular shuttle through which the work is adapted to be moved, a pivoted shuttle supporting yoke, a clamp Jfor holding said yoke in ad- `iusted position about its pivot, and a latch for positively locking said yoke.

12. In machine of the character described, a work support, a rotatable annular shuttle through which the work is adapted to be moved, a pivoted shuttle supporting yoke, a spring pressed latch for positively locking said yoke in adjusted position about its pivot, and a cam for releasing said latch.

13. In a machine of the character described, a work support, a rotatable annular shuttle through which the work is adapted to be moved, a pivoted shuttle supporting yoke, a clamp for holding said yoke in adjusted position about its pivot, a screw for operating said clamp, a spring pressed latch for positively locking said yoke, and a cam carried by said screw Jfor releasing said latch.

11i- In a machine of the character described, a work support, a rotatable annular shuttle through which the work is adapted to be moved, a pivoted shuttle supporting lvoke, a clamp for holding said yoke in adjusted position about its pivot, a screw for operating said clamp, a latch for positively locking said yoke, a cam carried by said screw for releasing said latch, and a spring device housed in said ,latch and engaging said cam for moving said latch into lockin engagement with said yoke when permitted by said cam.

In testimony whereof we allix our signatures.

GEORGE W. PROUTY. JASPER DERBY. 

